Kaepernick said. "So, yeah, if I have to come in as a backup, that fine. But that’s not where I’m staying. And when I prove that I’m a starter, I want to be able to step on the field as such."

He’s most likely not going to supplant Carr, who just received a new contract with the Raiders. But if, after the workout, the sky doesn’t fall and the NFL world keeps spinning, maybe another team will be willing to give him a workout. And another. And maybe he’ll get a roster spot. And maybe he’ll prove to be the best option for a team like, say, the Seahawks or the Panthers or someone else who doesn’t currently have a high-end quarterback.